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Citrex H3

Citrex H3

The cost-effective entry-level model for mobile use.

- Test and calibrate ventilators
- Flexible trigger settings and an optional oxygen sensor
- Built-in pressure and gas flow sensors
- Measure and display 16 different ventilation parameters

CITREX H3 Gas Flow Analyzer

With the CITREX H3, ventilators can be simply tested and calibrated. The built-in pressure and gas flow sensors facilitate the simultaneous measurement of various parameters. The ventilator tester can measure and calculate the most important ventilation parameters. With flexible trigger settings and an optional oxygen sensor, the CITREX H3 is the ideal entry-level device.

Oxygen option

The fast and accurate measurement of oxygen concentration is an important function in verifying and calibrating ventilators and other medical devices. The optional oxygen sensor for the CITREX H3 is therefore available for new equipment and later as a retrofit kit. The oxygen concentration is measured directly in the flow channel. There is no additional module needed.

Bidirectional flow measurement

The newly developed measuring method allows an extremely accurate, bidirectional flow, volume and pressure measurement with a small measuring resistance.

Ventilation parameters

The CITREX H3 ventilator tester can measure and display 16 different ventilation parameters. Pressure, volume and flow parameters can be displayed in real time on the color screen. These parameters and their units can be pre-selected by connecting CITREX H3 to a computer via our simple to use configuration tool.

Gas standards and gas types

Up to 5 gas types or mixtures such as air, air/O2 or N2O/O2 and 9 gas standards allow a wide range of applications in medical devices.

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Technical Specifications

Flow and Pressure Measurements
Measuring directionBidirectional
Flow±300 sL/min*** ±1.9 %* or ±0.1 sL/min (for 10..40°C)**
Temperature compensatedAutomatic
Pressure compensatedAutomatic
Humidity compensatedManual
FlowL/min, L/s, cfm
PressureinH2O, bar, mbar, cmH2O, mmHg
Ventilation parameter
Breath rate1–1000 bpm ±1 bpm* or ±2.5 %**
Time0.05–60 s ±0.02 s
Ratio1:300–300:1 ±2.5 %*
Tidal Volume±10 L ±2 %* or ±0.20 mL (>6 sL/min)**
Minute Volume0–300 sL/min ±2.5 %*
Peak flow± 300 sL/min ±2.0 %* or ±0.1 sL/min**
Pressure0–150 mbar ±0.75 %* or ±0.1 mbar**
The greater tolerance is valid: * Tolerance related to the measured value, ** Absolute tolerance, *** The unit sL/min is based on ambient conditions of 0 °C and 1013.25 mbar (DIN 1343).
Flow channel-50–150 mbar ±0.75 %* or ±0.1 mbar**
Atmospheric pressure500–1150 mbar ±1 %* or ±5 mbar**
Other measurements
Oxygen (Option) (pressure comp. ≤ 150 mbar)0–100 % ±1 % O2**
Gas temperature0–50°C ±1.75 %* or ±0.5 °C**
Gas typesAir, Air/O2, O2, N2O, N2O/O2
General information
Display1.7'' with touch control elements (color), Realtime curves
Data storagemicroSD Card
Power11.4 x 7 x 6 cm
Weight0.38 kg
Battery4 hours
ApprovalsCE, BC (Energy Efficiency for Battery Charging Systems), CSA (North America), IEC 61010-1:2010, IEC 61326-2:2012


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